Update index.html

index.html

@@ -10,7 +10,7 @@
   <meta property="og:title" content="AVIP Benchmark" />
   <meta property="og:description" content="Do multimodal models actually use audio in videos?" />
   <meta property="og:type" content="website" />
-  <meta property="og:video" content="thumbnail.mp4" />
+  <meta property="og:video" content="thumbnail_h264.mp4" />
   <meta name="twitter:card" content="summary_large_image" />
 
   <link rel="icon" href="assets/favicon.png" />
@@ -124,9 +124,9 @@
       <h1 id="tagline">Do you hear it?</h1>
       <p>AVIP probes whether multimodal models actually use <strong>audio</strong> when interpreting videos.</p>
       <a class="btn" href="#media">See examples</a>
-      <div class="cover" aria-hidden="true">
-        <img src="thumbnail.mp4" alt="Stylized collage of waveforms and video frames" loading="lazy" />
-      </div>
+      <video autoplay muted loop playsinline poster="assets/cover.jpg">
+      <source src="assets/cover_h264.mp4" type="video/mp4" />
+      </video>
     </section>
 
     <section id="about" class="section">